Your fugawi reads both ENC and BSB charts so you might want to look at the free USA BSB version charts rather than the ENC's...they look like the real thing.
ENC's from private companies are NOT necessarily the same charts that you get free from the government. this is particularly true in the Bahamas where depending on the company you can get THREE different basic charts as the base and each of these is then further enhanced by the different mfr's add-ons like photography, marina info etc.
You can get the BSB's here:http://nauticalcharts.noaa.gov/mcd/Raster/Index.htm
They call them RNC's for raster nav charts but the format is BSB